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| Best Seller  | O-ACE-sis Granule Calcium Hardness Increaser 25 lb Calcium Hardness Increaser Calcium Chloride. Low water hardness could stain or etch the pool surface and corrode equipment. 6 pounds of Calcium Hardness Increaser per 10 000 gallons of water will raise calcium hardness level by 50 ppm. ... more | FREE shipping go to store |
 | Pool Mate Calcium Increaser for Swimming Pools Increases Water Hardness. Low calcium hardness level can cause corrosive water. Prevents the staining or etching of your pool's surface. ... more | FREE shipping go to store |
| Best Seller  | Maintain Pool Pro Balancer Calcium Hardness Increaser - 7lbs Easily maintain the calcium hardness levels in your pool or spa with the Maintain Pool Pro Balancer Calcium Hardness Increaser. This 7 lb bottle is designed to safely raise low calcium levels without ... ... more | FREE shipping go to store |
 | Pool Mate Calcium Increaser 25 lb. Pool Mate calcium plus raises calcium hardness levels when measures drop below the recommended range of 200-400 ppm. If calcium hardness levels are too low the 'soft water' will corrode pool equipment, etch pool plaster and may cause metallic stains. ... more | FREE shipping go to store |
 | Pool Mate Calcium Increaser for Swimming Pools Increases Water Hardness. Low calcium hardness level can cause corrosive water. Prevents the staining or etching of your pool's surface. ... more | FREE shipping go to store |
 | Robelle calcium plus raises calcium hardness levels when levels drop below the recommended range of 200-400 ppm. If calcium hardness levels are too low the 'soft water' will corrode pool equipment, etch pool plaster and may cause metallic stains. ... more | FREE shipping go to store |
 | Robelle calcium plus raises calcium hardness levels when levels drop below the recommended range of 200-400 ppm. If calcium hardness levels are too low the 'soft water' will corrode pool equipment, etch pool plaster and may cause metallic stains. ... more | FREE shipping go to store |
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